Ronda Rousey will compete in her first UFC fight in more than a year this December, and she recently revealed that it might be her last. The mixed martial artist told Ellen DeGeneres that she's preparing to retire after her December 30 fight against current UFC bantamweight champion Amanda Nunes. "I am wrapping it up," Rousey told DeGeneres. "This is definitely one of my last fights."

Rousey, 29, has spent much of her life practicing judo and mixed martial arts. She became the first U.S. woman to take home an Olympic medal for judo in 2008, when she won bronze at the Olympic Games in Beijing. She went on to win the Strikeforce Women's Bantamweight Championship in 2011, and to become the UFC Women's Bantamweight Champion—a title she defended several times. Rousey was ultimately defeated last November, when competitor Holly Holm claimed the UFC Bantamweight Champion title as her own. Rousey's loss shocked many—herself included. But despite her physical and emotional injuries, Rousey went right back to training 12 weeks later. And now, she's ready to step into the octagon again.

"Ronda’s return garnered 489 million impressions, making it the most re-tweeted announcement in UFC history," UFC president Dana White told Yahoo Sports. "Her return is huge." And while the fans are anxiously awaiting her return, Rousey is just biding her time until the big day. “The build-up is more tiring than anything else,” she said. “If we had a fight right now, I’d be like, ‘I’ll fight right now,’ and then I’d go get dinner and I wouldn’t really be tired about it. It’s the weeks and weeks of build-up beforehand and you know you’re fighting this one person and it’s your showdown and the most important thing in your whole life and millions of people are watching."